Ichijo Hotaru: Fifth grade transfer student from Tokyo. She hates being stopped by the station attendant, so she started paying the adult fare about a year ago.
Koshigaya Komori: Natsumi’s older sister, eighth grader. She was about to pay “child’s fare” on the train, but she chickened out last minute.
Koshigaya Natsumi: Seventh grader at Asahigaoka Branch School. She’ll plan a bike trip for three hours one way, but she never considers the time it will take to get back home.
Miyauchi Renge: First grade, the youngest of the five students at Asahigaoka Branch School. She wants to enjoy the scenery when she travels, but it’s all rice fields, so she gets bored.